Shrub · Rosaceae
Shrubby Cinquefoil
Potentilla fruticosa
A shrub that forgives beginners and keeps blooming right through summer, all for next to no effort.
Full sun
Every 7–14 days
USDA 2–7
2–4 ft · 0.6–1.2 m
Overview
If you are just starting out, shrubby cinquefoil is a kind place to begin. It is a small, rounded member of the rose family that sheds its leaves each winter, and it pays you back with months of flowers. Simple five-petaled blooms, usually a soft buttery yellow, open over fine leaves from June right through September. The shrub keeps itself low and neat at 2 to 4 feet (61 to 122 cm) tall, so it settles in happily along a border edge, as a low hedge, or in that sunny corner you never quite knew what to do with.
The best part for a nervous grower is how hard it is to upset. Cold does not faze it, right down to USDA zone 2, and it takes poor, sandy, alkaline, or heavy clay ground without a fuss. Once its roots take hold it copes with dry spells on its own, so a missed watering will not undo it. And if plain yellow is not your taste, breeders have opened up white, pink, and orange forms as well.
Give it one thing and it will thank you: keep it out of relentless heat. Hot summers bleach the flower color and can leave the shrub looking worn, so it does its best work in northern gardens and other cool-summer spots. Offer full sun, ground that drains, and a firm cut back each spring, and honestly there is not much more to do.
Care
The short version: give it full sun, ordinary soil that drains, and one firm shearing in late winter or early spring, and you are most of the way there. It barely needs feeding, rides out drought once it has settled, and turns a cool summer into months of bloom.
Light
Full sun brings you the heaviest flush of flowers, so give it as much as you can. It will still grow in partial shade or partial sun, but the blooms come fewer and the shrub loosens up and reaches in dimmer spots. When in doubt, choose the brighter place.
Water
Be attentive early and relaxed later. Keep young plants watered while their roots settle, then you can ease off almost entirely, because a mature shrub is remarkably drought tolerant and only wants a drink in a long dry stretch. Let the soil dry down through its top half before the next drink.
Soil
You would be hard pressed to find fussier ground this shrub will not accept. Ordinary, well-drained soil suits it, and it settles into clay, loam, sand, and even lean or alkaline ground, coping with any pH from 5.5 to 8.0. Do not feel you need to improve the spot much.
Temperature
Winter is no threat at all, since the shrub is hardy from a bitter -49°F (-45°C) up to about 86°F (30°C). The tender point is summer, not winter: drawn-out heat fades the flowers, so a cool-summer climate really does suit it best.
Humidity
This one likes its air on the dry side and is unhappy in muggy conditions. Low humidity and moving air keep the leaves healthy, because still, damp air is exactly what lets leaf spot and mildew take hold.
Feeding
Feeding is one worry you can set down. A balanced all-purpose fertilizer or a scatter of compost in early spring covers it completely, and the shrub still flowers happily on poor soil if you forget.
Pruning
If you do only one job, make it this. The shrub flowers on fresh new wood, so cut it back hard in late winter to early spring to hold a neat shape and spur new blooms, trimming out any leggy or scruffy stems as you go.
Repotting
Out in the garden it never needs repotting, and in a pot it rarely does. Only shift it into a larger container when roots wind around the sides, water rushes straight through, or the growth simply stops moving.
Size & spacing
Picture a gently mounded shrub around 2 to 4 feet (61 to 122 cm) tall that spreads a bit wider than it stands, to 3 to 5 feet (91 to 152 cm) across. Leave each plant that much elbow room and the rounded shape will fill in without feeling crowded.
When to plant
There is no rush and no fuss here. This is a very cold-hardy shrub made for a long northern growing season, so set young plants out in spring once frost has passed, or in early fall if you prefer. A hard shear in late winter keeps the flowers arriving from June into September.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Late winter (stratified seed), 8-10 weeks before last frost
- Plant: Spring after last frost, or early fall
- Harvest: June to September
Hardiness
USDA hardiness zones: 2–7
Temperature: down to -46°C
Troubleshooting
Take heart, because this shrub seldom asks for a rescue. When something does slip, it usually comes back to heat, damp air, or a spring pruning that got skipped. Find the leaf or flower symptom that matches yours below, and step in while your help still counts.
Speckled, bronzing leaves wrapped in fine webbing
Do not panic if the leaves look speckled and bronzed under a haze of webbing, because this is simply spider mites moving in during hot, dry, still weather to sip the color out of the foliage. You can check by tapping a branch over a sheet of white paper and watching for little specks that crawl. A firm spray of water on the leaf undersides, more air around the plant, and insecticidal soap or horticultural oil for a bad case will set things right.
Fix:
- Spray foliage with a strong jet of water, focusing on leaf undersides
- Improve air movement and avoid hot, stagnant, dry locations
- Apply insecticidal soap or horticultural oil if infestation is heavy
Dark leaf spots or a powdery white film
Clear dark spots usually mean fungal leaf spot, while a dusty pale coating is powdery mildew, and each takes hold where the air stays warm, damp, and unmoving. Pick off the marked leaves and throw them away, keep water off the foliage, and thin the shrub so the breeze can pass through. More often than not the problem eases on its own after that.
Fix:
- Remove and dispose of affected foliage
- Avoid overhead watering and wetting foliage
- Thin or prune to improve air circulation
Pale, washed-out flowers on a bare, leggy shrub
When the color goes pale and the base turns woody and bare, the culprit is usually summer heat bleaching the blooms alongside a spring pruning that never happened. Shear the shrub back hard in late winter to early spring to bring on fresh flowering wood. Pink and red cultivars keep their color much better where summers stay cool, so choose a mild spot if you can.
Fix:
- Shear or prune hard in late winter to early spring to renew flowering wood
- Site in cooler, sunny locations; pink and red cultivars hold color better in cool climates
Toxicity
Here is one less thing to worry over. The ASPCA lists cinquefoil as non-toxic to cats, dogs, and horses, and nothing in the shrub threatens other animals or people either. Plant it wherever you like, even where pets and little ones roam.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Perfectly safe around cats; a nibbled leaf or flower carries no toxins to trouble them.
Dogs None
A dog that gnaws or rubs against the shrub faces no poisoning risk.
Horses None
Horses can graze right beside it unharmed, as the ASPCA counts cinquefoil non-toxic to them.
Rabbits Safe
Rabbits may browse the leaves without any worry about toxicity.
Livestock Safe
Cattle, goats, and sheep come to no harm feeding nearby.
Birds Safe
Birds that peck at the shrub come to no harm from it.
People Safe
Safe to handle and to grow near children, though it is grown for looks rather than for eating.
No special handling precautions for toxicity; wear gloves if desired when pruning woody stems.
Varieties
This old garden favorite comes in far more than the classic yellow now, thanks to patient breeding. Here are the cultivars you are most likely to run across.
'Abbotswood'
A tidy, compact selection whose pure white flowers sit above soft blue-green leaves.
'Goldfinger'
Large, deep golden-yellow blooms smother this compact mound for a long stretch of the season.
CHEESEHEAD ('SMPFMY')
A bright yellow bloomer picked for its neat, rounded habit.
Happy Face Pink Paradise
A pink selection that hangs onto its color much better through cooler summers.
How to propagate
Making more of this shrub is genuinely easy, and beginners have a good shot at every method. Root a cutting, split an established clump, or sow seed if you do not mind a little surprise in the results.
Stem cuttingsEasy
Softwood cuttings in late spring to summer · 4-8 weeks to root
Cuttings are the simplest route, and they are very forgiving. Snip softwood or semi-hardwood pieces from late spring into summer, keep them humid, and they will strike roots in roughly 4 to 8 weeks.
SeedModerate
Sow stratified seed in late winter to early spring · Several weeks to germinate; cultivars do not come true from seed
Seed asks for a bit more patience. Chill it first with a cold stratification, sow from late winter into early spring, and it will come up over several weeks. Do keep in mind that named cultivars will not breed true from seed, so your seedlings will differ from the parent.
DivisionEasy
Spring or early fall · One growing season
You can also split older plants in spring or early fall. Dig up a clump or a rooted sucker, ease it apart, and set the pieces back in the ground, where they knit in over one growing season.
Myths
Like a lot of flowering shrubs, shrubby cinquefoil must be poisonous to pets.
You can put that fear aside completely. The ASPCA lists cinquefoil, Potentilla spp., as non-toxic to cats, dogs, and horses, so there are no toxins here for animals, and a curious nibble will not hurt a thing.
Prune potentilla straight after it blooms, the way you would a spring-flowering shrub.
Doing that would snip away next summer's display, since this shrub sets its flowers on new wood. Cut it back hard in late winter to early spring instead, and you will get the fullest show of blooms.